Adjust the sliders to make your siren, then press any key and let 'er rip! The green ball represents the pitch. Just please don't blast this at school. I won't be held responsible for any panicking principals, 'cause you're the one who chose to blast is out loud, not me. Free will, man.
Yes, I know, seems random, but ever since almost a year ago I developed an affinity for siren stuff, because there's so much to get into and they sound pretty cool. The code and math techniques used in this project are stemmed from ones I've been using in TurboWarp to make my own smooth siren synths. If you use them, just please give me credit. I worked hard on those math expressions.